Is anyone else annoyed that Greer killed the 'deer' right after misestimating the intelligence of the predator-creature?
Not at all.
the needs of the many out weight the stupidity of the deer
True... and if they were, why did the predator hunt them?
the predator was able to communicate, even if it was in an unusual way.
but the deer appeared to act instinctively, running when startled.
while, yes, it could have been highly intelligent - the available evidence suggested that it wasn't likely. just like the predator took advantage of an opportunity with humans, humans took advantage of an opportunity with the deer.
they were able to face each other without running, measure each other, and determine the need for, or viability of, violence in self defence.
the deer displayed no such characteristics.
additionally, greer developed from - at the start of the episode - someone who was beginning to question himself, back to confident - and perhaps a little more accepting of intelligent creatures. he deserves a little celebration
however, when the humans encroached on its home territory, it turned lethal - an instinctive reaction, to be sure, but one which could have been used in response to a food threat too. instead, it attempted to frighten first.
perhaps it did see greer, perhaps not. the predator did, though - and the deer on that planet have probably developed keen eyesight to detect threats. if it did see greer, then it didn't have the intelligence to determine that he was a clear and present danger to it - but it bolted as soon as the predator showed up. it certainly should have heard greer and scott arguing about who should take the shot thoughI'm not sure the deer even saw Greer, as the whole point was to stay hidden so it wouldn't know he was there.
additionally, the fact that an intelligent predator was protecting its food source would suggest that the predator had enough time to determine the intelligence of the deer - and found it lacking. greer may well have taken this as a suitable indication of the deer's suitability for hunting.
My thoughts exactly.